John hartin



A UNITED sTATEs PATENT oEEroE.

f JOHN HAR'IIN, OF NEW YORK, N. Y.

METHOD OF DRYING PAPER.

Specification of Letters Patent No. 9,918, dated August 9, 1853.

To au Lo/wm t may concern:

Be it known that I, JOHN HAETIN, of New n York, in the county and Stateof New York,

have invented a certain new and useful Improvement on Machines forDrying Paper; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings, and the letters of reference thereon, all ofwhich form a part of this specification, the same letters of referencealways designating the same object of part of machine in all thefigures.

Of the drawings Figure l is a sectional side view. A, A, are twouprights forming with B. B one side of the structure for the support ofthe fixtures. C, O, O, are three frames containing fans. D, D, D, D, arelarge rollers for conveying the paper through the machine. e. c. e. c.e. e. e. c. e. are small rollers to support the paper. F. is a blower.Gr is a pipe to conduct the wind from the blower into the frames (C. C.O.) H. H. H. are apertures for the wind to enter the frames. I. I. I. I.I. I. are fans for fanning the paper as it passes and repasses over andbetween them, K. K. K. K. K. K. are pulleys which by means of bandsactuate the fans. L showing the paper as it passes through the machine.

Fig. 2. is a sectional end view. A. A. are uprights of the structure. Z)are traverses to connect the two sides of the structure. O. C. C. arethree frames which hold the fans between which the paper passes. F is ablower. G is a pipe for conducting the wind from the blower into theframes. H. H. H. are apertures for the wind to pass into the frames. z'are valves for opening or shutting the apertures. K. K. K. are pulleysto actuate the fans.

Fig. 3 is one of the frames (O C O) showing the covering at the top;said covering being put on to prevent the paper from coming in contactwith the fans.

vWhen paper is driedby passing it between opposlte jets of air issuingfrom perforations in air vessels, it is found that the jets of airindent the paper and make its surfaces rough and uneven. The nature ofmy invention consists in drying the paper by conducting it betweenopposite series of equal fans revolving with equal velocities, causing apressure of air of equal force to act simultaneously upon opposite sidesof the paper, by which I insure smooth and uniform surfaces to the same.

To enable others skilled in the art to make and use my invention, Ishall describe its construction and operation.

I build an upright structure, of which (A. A. B. B, Fig. l) form oneside. I connect two such sides together by means of traverse pieces asshown in (Fig. 2, Z). b). Into this upright structure I fiX severalframes horizontally, at suitable distance apart; through these frames Irun small shafts crosswise to which I attach thin pieces of wood, ortin, thus forming fans; the top and bottom of these frames I cover withwire cloth, or any other material, suitable for that purpose, allowingthe air to pass through freely, to prevent the paper from coming incontact with the fans; on the top of these frames (O. C. C.) I placesmall rollers crosswise to support the paper. In the center of theseframes at the top I place two short rollers oblique, forming an obtuseangle where they meet, which tends to keep the paper spread as it passesthrough the machine. On one side of the structure I place ablower (F.Fig. l and Fig. 2.) and connect this blower with the frames (C. C. C.)by a pipe (G) at the connection of each frame with this pipe I fix a.valve (i.) so that I can shut off the wind if required. At each end ofthe machine I place large rollers at their proper places, (as shown Fig.l D. D. D. D.) for conveying the paper through the machine. I putpulleys at the ends of the shafts and connect these pulleys by bands.Now if one of these large rollers (D) is set in motion it will operatethe whole machine; it carries the paper through; it sets the blower inmotion, and operates the fans thus causing the paper to dry.

The blower may be dispensed with altogether.

Vhat I claim as my invention and desire to secure by Letters Patent, is-

Drying paper by passing it between opposite series of equal sized fanswhich revolve with equal velocities; by which a pressure of air of equalforce is made to act simultaneously upon opposite sides of the paper,and thereby insure smooth and uniform surfaces upon the same,substantially as herein set forth.

JOHN HARTIN.

